it will take more than one try to get it dialed to perfection, so don't get discouraged. every engine is different. some like more timing in quicker, while some like less timing in slower. or vice-versa, even a combination of some in quick/slow, then the rest in quick/slow at xxxx RPM.
get a notebook and keep notations [so you don't get lost] of your changes and the engines reactions, then try something else. strictly trial and error till you find the optimum.